These images are a composite of separate exposures acquired by the WFC3/IR and WFC3/UVIS instruments on the Hubble Space Telescope and the ACIS instrument on the Chandra X-ray Observatory. Several filters were used to sample various wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:
Magenta: X-ray
Blue: F438W
Green: F555W
Red: F160W